Figure 2From: Dose-dependent regulation of cell proliferation and collagen degradation by estradiol on ligamentum flavum Effects of estradiol on proliferation of LF cells by MTT assay. Proliferation of ligamentum flavum cells was measured by MTT assay at 24 hours (A), Day 3 (B) and Day 7 (C) treated with 17β-estradiol (10-7 >M, 10-8 M, 10-9 M, and 10-10 M). The level of proliferation was presented as optical density (O.D.) of absorbance at 570 nm. (n = 6; * p <0.05).Back to article page